Portable sign



FIG. 1 is a front view of the portable sign;

FIG. 2 is a side view of the portable sign, as shown from the Left side;

FIG. 3 is a back view of the portable sign;

FIG. 4 is a side view of the portable sign, as shown from the Right side; and,

FIG. 5 is a perspective view of the portable sign. 

The ornamental design for a portable sign, as shown and described. 